baber/WOPTO huggingface dataset:
Patent GB-122933-A (GB)
Title: Improvements relating to Planting Tools.
Inventor: PILCHER CHARLIE EDWIN
IPC: A01C5/02
Filed: 1918-02-20
Abstract: 122,933. Pilcher, C. E. Feb. 20, 1918. Forks; planting - tools.- A tool for making holes for planting potatoes &c. comprises a shaft or stem having prongs around the lower end for loosening the soil around the holes. A tool with two prongs may be used as an ordinary fork. The tool may be formed by mounting a hollow shaft on the central prong of a three-pronged fork, so that the hollow shaft forms an extension of the shaft of the fork. In the form shown, four prongs c extend radially outward from the lower part b of the shaft a, their ends being bent downwards parallel to the shaft a. The part b may be pointed, or formed of metal tube, with its end of the shape shown. It may extend beyond the ends of the prongs. The prongs may form a tread for the operator's foot, and may be adjustably connected to the shaft. According to the Provisional Specification, the lower end of the shaft may be threaded like an earth auger, and the prongs may be mounted so that the shaft may be rotated independently of them.
Patent GB-717523-A (GB)
Title: Improvements in or relating to steering gears for mechanically propelled vehicles
IPC: B62D3/04
Filed: 1952-02-05
Abstract: 717,523. Cam mechanism. BISHOP, R., JOHNSTON, R. H., and WHITLOCK, G. B. R. May 5, 1953 [Feb. 5, 1952], No. 3053/52. Class 80 (3) [Also in Group XXXIV] In a steering gear wherein a helical cam or worm 1 on the steering shaft is engaged by one or more pins, rollers or the like, on a rocker arm linked to the road wheels of a vehicle, the cam is supported at one end by a plain bush 4 and at the other end by a threaded extension 7 on the cam which engages a threaded bore in the housing to constitute a radial and thrust bearing. The thread has a V-section groove and a slow pitch preferably of opposite hand to that of the cam, the axial displacement of the cam in operation being taken into account in its design. In a modification the threaded extension engages an internally-threaded bush which is rotatable in the housing and is adjustably clamped by a nut to facilitate initial positioning of the cam. Alternatively the end of the cam may have an internally threaded recess engaged by a threaded plug rotatably adjustable in the housing. In a further construction an extension of the cam is formed with a number of closely spaced annular grooves of V- section, Fig. 3 (not shown), engaged by complementary ribs on the inner surfaces of a split bush secured in the housing.
Patent GB-633814-A (GB)
Title: A process for the manufacture of maleic anhydride
IPC: C07C51/56
Filed: 1948-02-04
Abstract: Maleic anhydride is obtained by continuously dehydrating maleic acid in a distillation chamber by feeding an aqueous solution of maleic acid continuously into the vapour of a coal tar solvent maintained at a temperature of at least 135 DEG  C., removing a binary mixture of water and coal tar solvent from the top of the chamber by azeotropic distillation and continuously adding fresh solvent to the chamber. Xylene is the preferred solvent.  The apparatus required consists of a tall tower packed with bubble cap trays or other material, maleic acid solution, e.g. of 40 to 60 per cent, preferably 50 per cent, strength being fed in at the middle and xylene at the top.  A reboiler situated away from the tower is used to maintain the solvent at the required temperature and substantially pure maleic anhydride is drawn off from the bottom of the tower.  Vapours escaping from the top of the tower are led to the condenser and the aqueous and solvent phases allowed to separate in a decanter from which the xylene may be returned to the tower.  Best results are obtained when the temperature at the top of the tower is between 100 DEG  to 115 DEG C., at the feed point 135 DEG  to 145 DEG  C., and at the bottom 203 DEG  to 205 DEG  C.  Specification 609,533, [Group IV (b)], is referred to.ALSO:Maleic anhydride is obtained by continuously dehydrating maleic acid in a distillation chamber by feeding an aqueous solution of maleic acid continuously into the vapour of a coal tar solvent maintained at a temperature of at least 135 DEG  C., removing a binary mixture of water and coal tar solvent from the top of the chamber by azeotropic distillation and continuously adding fresh solvent to the chamber.  Xylene is the preferred solvent.  The apparatus required consists of a tall tower packed with bubble cap trays or other material maleic acid solution, e.g. of 40 to 60 per cent, preferably 50 per cent, strength being fed in at the middle and xylene at the top.  A reboiler situated away from the tower is used to maintain the solvent at the required temperature and substantially pure maleic anhydride is drawn off from the bottom of the tower. Vapours escaping from the top of the tower are led to the condenser and the aqueous and solvent phases allowed to separate in a decanter from which the xylene may be returned to the tower.  Best results are obtained when the temperature at the top of the tower is between 100 DEG  to 115 DEG  C., at the feed point 135 DEG  to 145 DEG  C., and at the bottom 203 DEG  to 205 DEG  C.  Specification 609,533 is referred to.
Patent GB-600619-A (GB)
Title: Improvements in and relating to the production, storing and distribution of acetylene
IPC: C10H21/00
Filed: 1945-02-09
Abstract: <PICT:0600619/IV(b)/1> A plant for producing acetylene and delivering it to a point or points of use comprises a low pressure generator a, a compressor m receiving acetylene from the generator and delivering it to a manifold o having a plurality of dissolved acetylene containers p connected thereto, a pipe line s from said manifold to the point or points of use, and a pressure regulating valve means q in said pipe line.  In a modification, the compressor delivers the acetylene to two manifolds arranged in parallel, each manifold having a plurality of dissolved acetylene containers connected thereto, and the arrangement is such that while one set of containers is being charged the other set is available for discharge through its manifold and pressure regulating valve to the pipe line.  The plant may include also a water seal c, washer d, purifier e, gas holder f, low pressure drier k, pulsometer l, high pressure drier n, and flash-back arrester r.  Specification 600,617 is referred to.
Patent GB-531609-A (GB)
Title: Improvements in or relating to regenerators for coke ovens
IPC: C10B5/10
Filed: 1939-02-02
Abstract: 531,609. Regenerators. GROVES, W. W. (Otto-Wiitputte Ovenbouw Mij.). Feb. 2, 1939, No. 3511. [Class 64 (i)] The regenerator chambers c, d, Fig. 1, of a coke oven are bounded by partition walls built of bricks so formed and arranged that each vertical jointing surface running across a wall lies in two displaced planes to render the joints gas tight. The wall between two regenerators of a pair is formed of bricks, Figs. 3 and 4, with staggered jointing surfaces g<1> at their sides, and the bricks of superimposed layers interengage with groove and tongue connections h<1>, h<2>. A wall between pairs of regenerators contains a rich gas channel e formed in bricks i. Alternate layers of bricks contain rectangular bricks k, Fig. 3, at the sides of the bricks i between which are bricks m with longitudinal extensions. The other layers contain bricks o, Fig. 4, of the same width as the bricks i, and side bricks p.
Patent GB-724996-A (GB)
Title: Arrangement for supporting a movable machine member on horizontal slideways
IPC: B23Q1/26
Filed: 1953-02-10
Abstract: 724,996. Rectilinear - motion bearings. SOC. NOUVELLE DE CONSTRUCTION DE MACHINESOUTILS ET D'OUTILLAGE PROCEDES C.W.B. Feb. 10, 1953 [Feb. 20, 1952], No. 3707/53. Addition to 704,301 [Group XXII]. Class 12 (1) [Also in Group XXII]. A rectilinear-motion bearing for relieving the pressure between a sliding part 5 and its horizontal slideways 6 comprises a roller-system adapted to support the part 5 resiliently and run on a roller-way 71 parallel to the slideways and provided on the part 4 having the slideways, the rollersystem being mounted adjustably on the part 5 to compensate for changes in the location of the centre of gravity of the sliding parts due to attaching other parts (not shown) to part 5. As applied to boring and milling machines, the pressure of the headstock 5 is relieved in the slideways 6 which are provided in a slide 4, the latter being adjustable vertically on the column 2 of the machine which is adjustable on the base 1. A pair of rollers 75 in spherical bearings 77 are mounted in blocks 86 fixed to a lever 92 which is pivoted on a shaft 93 in bearings 95, 96 in a housing 127, 143, 144, 97 secured by studs 98 to the headstock. An extension 99 of the lever receives a threaded sleeve 102 having a graduated skirt 103 which bears on a washer 105 arranged on a pin 108 received in the bore of the sleeve 102. A group of spring washers 106 is located between the washer 105 and the base 107 of the pin 108 and can be compressed by rotating the skirt 103. This rocks the lever 92 about the shaft 93, and engages the rollers 75 on the rollerway 71 to relieve the pressure in the slideways. If a part such as a turret head is attached to the front face 70 of the headstock 5, the rollersystem may be moved to the axial location of the new centre of gravity after releasing the pressure on the springs 106. The lever 92 is readjusted on the shaft 93 according to a scale 142 on the housing and a pointer 137 on the lever by a rack-bar 114 attached loosely at its end 113 to the lever and operated by a pinion 122 on a shaft 124 which bears in the forward face 127 of the housing and is adapted to be rotated by a key.
Patent GB-906677-A (GB)
Title: Transfluxor synchronizer for automatic control systems
IPC: G05D1/00
Filed: 1960-02-01
Abstract: 906,677. Automatic control systems. BENDIX CORPORATION. Feb. 1, 1961 [Feb. 12, 1960 (2)], No. 3837/61. Class 38 (4). In an electric retroactive control system for a variable, the control signal may be nullified at will, to render the control system inoperative, by initiating feedback of signal pulses through a transfluxor storage device. In Fig. 1 an alternating voltage signal E 1  in an aircraft automatic pilot is applied through an amplifier 4 to control a servomotor - operated control surface (not shown). This signal is also applied through an amplifier 10, demodulator 11 and lag network 12 to a diode gating circuit 13 which is normally blocked. When, however, it is desired to control manually, pulse inputs P 1  are applied through rectifiers 132, 134 so that gating circuit 13 produces output pulses E 5 , the polarity and magnitude of which are dependent on the phase and amplitude of signal voltage E 1 . These output pulses, after amplification by a transistor 14, are applied to the control winding W 0  of a transfluxor 15 to produce a corresponding coupling between an A.C. energized winding W 1  and an output winding W 2 . The signal from the transfluxor is rectified at 20, re-modulated at 21 and fed, back to cancel the automatic control signal E 1  a switch 22 being closed during manual control. When automatic control is restored by opening switch 22 and ceasing to apply pulses to gate 13, the signal from transfluxor 15 remains at the value it had at the time of changeover to ensure a smooth change back to manual control if switch 22 is re-closed at any time. In one modification transfluxor winding W 0  is energized through a push-pull transistor amplifier and the energization of winding W 1  is pulsed to occur during the intervals between the energizations of winding W 0  to avoid interference effects. In another modification correct timing of applied pulses relative to the phase of the signal voltage E 1  permits demodulator 11 to be dispensed with. Specifications 662,860, 778,162, 858,208 and 848,209 are referred to.
Patent GB-470019-A (GB)
Title: Device for manifolding written documents, drawings or the like by transfer printing
IPC: B41L7/08
Filed: 1936-02-08
Abstract: 470,019. Copying documents. RITZERFELD, W. Feb. 8, 1936, No. 3891. Convention date, Feb. 22, 1935. [Class 100 (ii)] In a transfer-printing device of the kind in which a moistened sheet is fed between a roller 4 fitted with a mirror script and an impression roller 5, a complete moistening of the sheet fed over the table 6 is ensured by providing a moistening device 11 arranged in front of the line of contact of two feed-rollers 7, 8 which are normally stationary and so act as stops, and the lower feed-roller 7 of which has a diameter greater than the upper feedroller 8. In operating the machine by means of a lever 13, the movement of the lever to the position 13<1> causes the moistening device to contact with the sheet, and only on further movement to the position 13<11> is the drive transferred to the feed-rollers 7, 8.
Patent GB-720698-A (GB)
Title: Dynamo-electric machines
IPC: H02K17/16
Filed: 1953-02-12
Abstract: 720,698. Induction machines. SINGER MANUFACTURING CO. Feb. 12, 1953 [March 22, 1952], No. 3962/53. Class 35. An induction motor has a low inertia rotor (preferably made of aluminium) in the form of a thin cylinder disposed between an outer wound stator and an inner unwound stator. The cylindrical or cup-shaped rotor 23 is carried by a shaft 20, the bearings of which are carried by the inner stator member. The latter comprises laminations 15 held between a shoulder 16 of an inner stud 14 and the inner face of the hub of an end cap 11. When assembled, the stud 14 and the end cap 11 form a unitary rotor-carrying structure having a bore 17 for the rotor shaft 17. The cap 11 is secured to the motor casing 1 by through bolts 12, while the other end cap 4 which is made of non-conducting material is secured by bolts 5.
Patent GB-1516487-A (GB)
Title: Process and apparatus for cleaning very fine ore
IPC: B03B13/00
Filed: 1977-02-01
Abstract: 1516487 Cleaning by cyclonic separation HEYL & PATTERSON INC 1 Feb 1977 [2 Feb 1976] 03995/77 Heading B2P In an ore or coal cleaning process the underflow from an ore or coal classifying cyclone 5 is delivered to a heavy medium cyclone 10 where the ore or coal is cleaned. The underflow leaving the classifying cyclone 5 is continually measured for specific gravity (as at 39) and flow rate (as at 40) while the specific gravity of heavy medium that can be applied to the underflow is continually measured (as at 32). The amount of this heavy medium and the amount of water required to be added to the underflow are continually controlled (by an analog computer 38 via cascade controllers 48, 49 and valves 44, 46) as functions of the specific gravities and flow rate thus measured, whereby a substantially constant specific gravity and flow rate of the underflow are maintained as it enters the heavy medium cyclone 10. A two-stage magnetic separator 19 receives the overflow from the cyclone 10 and separates the heavy medium from the ore or coal, while another two-stage magnetic separator receives the underflow from the cyclone 10 and separates the heavy medium from the rejects. The heavy medium is used again.
Patent GB-305371-A (GB)
Title: Improvements in disc closures for bottles and other containers
IPC: B65D39/02
Filed: 1928-02-08
Abstract: 305,371. Keyser, C. Feb. 8, 1928. Disc closures.-A closure for bottle and other containers comprises a disc scored or otherwise formed at B, Fig. 7, to provide a hinge for a movable part B<2> adapted to be moved relatively to a fixed part B' which is formed with, or has attached to its undersurface, a piece B<5> extending circumferentially beyond the scoring and adapted to make the closure engage more than half the usual recess in the bottle, an opening being provided between the wall of the container and the edge B<6> of the extended piece for the removal of all or part of the contents of the bottle. The movable portion B<2> is provided with a handle or tab B<3> and the edge B<6> of the lower portion B<5> is inwardly curved or dished. In a modification, the movable part E<2>, Fig. 10, is of greater area than the fixed part E<1>, and the edge F<2> of the lower piece adjacent the opening is so shaped as to leave a comparatively large area of the piece to be covered by the movable part E<2>. The lifting tab E<4>, is disposed at the edge of the movable part remote from the part which covers the opening.
Patent GB-497516-A (GB)
Title: Improvements in and relating to tools for motor cultivating machines
IPC: A01B33/10
Filed: 1938-02-09
Abstract: 497,516. Machines for working land. DUFOUR, L. Feb. 9, 1938, Nos. 4037 and 4038. Convention dates, Feb. 10, 1937 and May 27, 1937. [Class 6 (i)] A tool for an agricultural implement, having a comparatively slow speed of rotation has the general shape of a triangle, spear point or goose foot, any section of which at rightangles to the axis of rotation is a part of the cycloid traced by that part of the section which first enters the ground. Figs. 1 and 2 show a tool consisting of three members carried by arms radiating from a hub 1. Each member consists of two wings 7 connected along a line 6, 8. Fig. 1 shows the cycloid traced out by the point 6 and the section of the tool along the line 6, 8 corresponds to the part 11 of the cycloid. Any other section of the tool at right-angles to the axis 1, for example on the line A, A, Fig. 2, corresponds to a part of the cycloid traced out by the point 13 which is the point of the cutting edge to enter the soil first. The part of the cycloid which is selected for the shape of the tool is that part situated from about 10 to 15 cm. below the surface of the ground. The arms 5 may have various shapes as shown in Fig. 1 and they may be curved upwardly so that they do not strike the ground before the cutting edges of the tool. In this construction the arms may be of cycloidal shape. Fig. 6 shows a construction in which the tools are carried by a disc 16 and Fig. 10 shows a further modification in the shape of the tool. Two separate tools of the shape shown in Fig. 12 may be secured on opposite sides of the hub or a tool twisted in opposite directions as shown in Fig. 15 may be used. Other modifications in the shape of the tool are described but in all cases the sections of the tool are cycloidal.
Patent GB-308864-A (GB)
Title: Improvements in and relating to wind screen wipers
IPC: B60S1/18
Filed: 1928-02-09
Abstract: 308,864. Fortescue, G. J. Feb. 9, 1928. Windows and the like, cleaning. - Clamps 3 secured to the windscreen 5 carry a tube 4 containing bearings 6 for a screw 7 which can be actuated by a handle 8 so as to cause reciprocation of a nut 9 carrying the wiping element 10. The screw may be actuated by other means than by the handle 8. According to the Provisional Specification, automatic means may be provided for effecting reversal of the rotary movement of the screw.
Patent GB-1409137-A (GB)
Title: Automatic gate opening devices
Inventor: ROYSTON LEONARD DOOLEY
IPC: E05F15/02
Filed: 1973-01-26
Abstract: 1409137 Gate operating devices L D ROYSTON 26 Jan 1973 [21 Sept 1972] 4156/73 Heading E2M In a gate opening device a detector, in the form of one or more vehicle operated mats 20a, 20b each incorporating a master cylinder 22, is actuated when a certain weight is applied to the detector, slave cylinders 16a, 16b being connected to a gate 12a, 12b respectively and adapted to be actuated to cause the gates to open when the detector and its associated master cylinder are depressed. On release of the pressure on the mat gate springs return the gate arms 12a, 12b to their closed position. The hydraulic circuit can also actuate a latching device 18 operated by a slave cylinder 19 in the hydraulic circuit to permit the opening of the gate arms and a detent is provided to prevent the opening of the arms. A holding or delay device (32) (Fig. 5, not shown) is incorporated in the mechanism for holding the gate open for a short period when the actuating device which opens the gate 6 is deactuated.
Patent GB-345420-A (GB)
Title: Lubrication of internal-combustion engines
IPC: F16N13/16
Filed: 1930-11-03
Abstract: 345,420. Force-feed lubricating. THOMAS, E. G., Metfield, Boundary Lane, Heswall, Cheshire. Nov. 3, 1930, No. 4167. [Class 12 (iii).] In an internal-combustion engine having a pressure lubricating system, a pipe 14 leads from the system to the upper end of a cylinder 2 containing a closelyfitting piston 7, the arrangement being such that when the engine is stationary the piston 7 is retained at the upper end of the cylinder by a spring 16, in which position a passage 6 is uncovered so that the lower part of the cylinder is charged with oil from a sump 5, while as soon as the engine is started the oil pressure acts on the top of the piston to force it down and deliver the charge of oil through a pipe 15 to a selected part of the engine or of the vehicle in which it is fitted. The piston is retained in its lower position so long as the engine is running. The stroke is limited by a screw 11 adjustably threaded into the piston, the lower end of the screw closing the outlet opening at the end of the stroke. A multiway tap may be fitted to the pipe 15. A fine filter or other restriction is arranged in the passage 6 to retard the flow of oil into the cylinder, so that, for stops of short duration, the charge entering the cylinder is proportional to the time during which the engine is stationary.
Patent GB-1120935-A (GB)
Title: Improvements in or relating to sliding clasp fastener stringers
Inventor: SWAINSON ERIC
IPC: A44B19/54
Filed: 1966-01-31
Abstract: 1,120,935. Sliding clasp fasteners. LIGHTNING FASTENERS Ltd. 9 Jan., 1967 [31 Jan., 1966], No. 4183/66. Heading E2S. Each stringer tape 10 of a sliding-clasp fastener having concealed single filament coupling elements has a series of apertures 12 through which the coupling head portions 4 of the coupling element 3 project and the main unapertured tape portion 14 is folded down over an abutment, formed, e.g., by chain stitching or by a braid 6 secured by stitching 8 to the element, but is free to be lifted to enable it to be stitched at 19 to the material 18 of a garment. The slider 17 runs beneath the tapes 10 except for the pull member 17b. The apertures 12 are formed in the tapes by omitting the warp threads and the elements 3 may be so gripped by the weft threads that no other means for securing the tapes are needed, although in some arrangements, e.g., Fig. 4 (not shown), the small unapertured portions 15 of the tapes below the elements are secured by the stitching 8 which also secures a spacing cord 5. In other arrangements, e.g., Fig. 6 (not shown), the small unapertured portions 15 of the tape are stitched to the top of the elements to form the abutments in place of the braid 6, the weft threads 13 being passed around the spacing cords 5. The elements, which may be of nylon, may be of coil or meander type. The coils may be waisted, in which case the abutments may be formed merely by stitching securing the small unapertured tape portions, Fig. 8 (not shown), or by a plastics filament welded along the top of the elements, Fig. 10 (not shown). In the case of meander type elements, the upper limbs may be stepped, Fig. 12 (not shown), or they may be smaller than the lower limbs, Fig. 18 (not shown), in which case the abutments may be formed by stitching passing over the interconnecting portions; or the small unapertured tape portions may be stitched between the upper and lower limbs, Fig. 13 (not shown), in which case the apertures in the tapes are made large enough to pass over the interconnecting portions of the elements by omitting some weft threads as well as the warp threads, Fig. 15 (not shown).